131015345 has 8 divisors (see below), whose sum is σ = 166466664. Its totient is φ = 98646784.

The previous prime is 131015333. The next prime is 131015371. The reversal of 131015345 is 543510131.

It can be written as a sum of positive squares in 4 ways, for example, as 25090081 + 105925264 = 5009^2 + 10292^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131015345 - 2⁴ = 131015329 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131015345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 770594 + ... + 770763.

It is an arithmetic number, because the mean of its divisors is an integer number (20808333).

Almost surely, 2^131015345 is an apocalyptic number.

It is an amenable number.

131015345 is a deficient number, since it is larger than the sum of its proper divisors (35451319).

131015345 is a wasteful number, since it uses less digits than its factorization.

131015345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1541379.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 131015345 is about 11446.1934720675. The cubic root of 131015345 is about 507.8951374375.

Adding to 131015345 its reverse (543510131), we get a palindrome (674525476).

The spelling of 131015345 in words is "one hundred thirty-one million, fifteen thousand, three hundred forty-five".